Hello Audiofans, About a month ago I bought a DT250, and unfortunately my DIY AMP didn't pull them up, because I can't remake it, i think about ready-made solutions ( near 250$). 1) Audio-gd NFB 15.32 2) Audio-gd NFB 12.1 3) Maverick Audio D1 Plus 4) O2 + ODAC 5) Fiio E9K + E17. And then there was a question of choice, because I only have to listen to "Fiio E9K + E17",I ask your opinion. As a source, I use a laptop ( with IDT HD Audiocard on-board). Thank you in advance for you help and experience.